CN218563764U

CN218563764U - Ship and air supply system thereof

Info

Publication number: CN218563764U
Application number: CN202221289596.8U
Authority: CN
Inventors: 樊杰; 陈来生; 刘彩霞; 许佳慧; 解飞; 窦卫东; 张云凯
Original assignee: Nantong Cimc Energy Equipment Co ltd; China International Marine Containers Group Co Ltd; CIMC Enric Holding Shenzhen Co Ltd
Current assignee: Nantong Cimc Energy Equipment Co ltd; China International Marine Containers Group Co Ltd; CIMC Enric Holding Shenzhen Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2023-03-03
Anticipated expiration: 2032-05-26

Abstract

The utility model provides a boats and ships and air supply system thereof. The gas supply system comprises storage equipment, gasification equipment and heat exchange equipment. The storage equipment is used for storing the fuel in a liquid state; the gasification equipment is positioned between the storage equipment and the engine, and is used for receiving and gasifying the fuel and sending the fuel to the engine; the heat exchange device comprises a heat channel and a medium channel which can exchange heat; the heat channel is arranged at the downstream of the engine to receive circulating water of the engine; a medium is arranged in the medium channel, and the medium is ethylene glycol aqueous solution; the medium receives the heat of the circulating water; the outlet of the medium channel is connected with the gasification equipment, and the medium with the increased temperature is conveyed into the gasification equipment to be heated and gasified with the fuel. The heat of the circulating water is used for heating the medium, and then the medium transfers the heat to the liquid fuel, so that the fuel is gasified. The air supply system takes the ethylene glycol aqueous solution as a medium, has a low freezing point, is not easy to freeze, and can stably gasify the fuel.

Description

Ship and air supply system thereof

Technical Field

The utility model relates to a boats and ships technical field, in particular to boats and ships and air supply system thereof.

Background

Liquefied Natural Gas (LNG) is an economic, green, environment-friendly and safe energy source, and is the trend of ship development in the future. Natural gas, which is gaseous at atmospheric pressure, is condensed into liquid by cooling it to-162 ℃, and is convenient to store and transport, but when used as a fuel, it needs to be gasified into gaseous state.

At present, a water bath type gasifier is commonly used, and has the advantages of compact structure, small occupied area and low price. However, the water bath type vaporizer has a phenomenon of freezing water, resulting in unstable vaporization.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stable air supply system of gasification and adopt this air supply system's boats and ships to solve the problem among the prior art.

In order to solve the technical problem, the utility model provides an air supply system for the engine provides fuel, air supply system includes:

a storage facility for storing fuel in a liquid state;

the gasification equipment is positioned between the storage equipment and the engine, is used for receiving and gasifying the fuel and sends the fuel to the engine;

the heat exchange device comprises a heat channel and a medium channel which can exchange heat; the heat channel is arranged at the downstream of the engine to receive circulating water of the engine; a medium is arranged in the medium channel, and the medium is an ethylene glycol aqueous solution; the medium receives heat of the circulating water;

the outlet of the medium channel is connected with the gasification equipment, and the medium with the increased temperature is conveyed into the gasification equipment to be heated and gasified.

In one embodiment, the volume ratio of ethylene glycol to water in the ethylene glycol aqueous solution is (4-6): (6-4).

In one embodiment, the inlet of the heat channel is connected with the engine, and a delivery pump is arranged between the inlet of the heat channel and the engine to pump circulating water into the heat channel;

and the outlet of the heat channel is communicated with the outside so as to discharge the circulating water with the reduced temperature to the outside.

In one embodiment, the gasification apparatus includes a heat source passage disposed downstream of the medium passage and a heat sink passage disposed upstream of the engine to deliver the gasified fuel to the engine;

the heat source passage receives a medium with increased temperature, the cold source passage receives fuel in a liquid state, and the heat source passage and the cold source passage can exchange heat.

In one embodiment, a circulation pump is provided between the outlet of the medium passage and the inlet of the heat source passage;

the outlet of the heat source passage is connected to the inlet of the medium passage.

In one embodiment, the air supply system further includes an expansion tank disposed between the outlet of the medium passage and the inlet of the heat source passage.

In one embodiment, the gas supply system further includes an expansion tank disposed in parallel with the gasification device, and one end of the expansion tank is disposed between the outlet of the medium passage and the inlet of the heat source passage, and the other end of the expansion tank is disposed between the outlet of the heat source passage and the inlet of the medium passage.

In one embodiment, an inlet pipeline is disposed at an inlet of the medium passage, an outlet pipeline is disposed at an inlet of the heat source passage, a connection pipeline is disposed on the expansion tank, and the inlet pipeline, the outlet pipeline, and the connection pipeline are connected by a three-way member.

The utility model also provides a ship, including the hull and set up in engine on the hull and as above gas supply system, gas supply system receives the circulating water of engine, just gas supply system with the engine is connected with to the engine provides the fuel after the gasification.

In one embodiment, the number of the engines is two, and both the engines are connected with the heat channel to provide circulating water.

According to the above technical scheme, the utility model discloses an advantage lies in with positive effect:

the utility model provides an air supply system includes storage facilities, gasification equipment and indirect heating equipment, and indirect heating equipment uses the circulating water of engine as the source, and heat heating medium through this circulating water is mediated, and the rethread medium makes fuel gasification with heat transfer to being liquid fuel to provide fuel for the engine. The air supply system takes the ethylene glycol aqueous solution as a medium, has a low freezing point, is not easy to freeze, and can stably gasify the fuel.

Drawings

Fig. 1 is a schematic diagram of an engine and an air supply system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an air supply system according to another embodiment of the present invention.

The reference numerals are illustrated below:

11. heat exchange equipment; 12. a gasification facility; 13. a circulation pump; 14. an expansion tank;

21. an output pipe; 22. a delivery pump.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

The utility model provides a boats and ships, this boats and ships are LNG power boats and ships, and the gasification of LNG makes the stability of traveling of boats and ships stable.

Specifically, the ship comprises a hull, and an engine and an air supply system which are arranged on the hull.

The number of the engines may be one or two. When the number of the engines is one, LNG is used as fuel; when the number of the engines is two, one of the engines takes LNG as fuel, and the other engine takes diesel oil as fuel. In the present embodiment, two engines are described as an example.

Each engine includes a cooling circulation system for cooling the engine. Specifically, the cooling circulation system includes a water intake pipe, a water intake pump, and an output pipe, the water intake pipe is communicated with the outside, the water intake pump is disposed on the water intake pipe, and pumps the outside water into the engine. For example, sea or river water is pumped.

The output pipe is used for outputting the circulating water after cooling.

The gas supply system receives circulating water output by a cooling circulation system of the engine, heats the medium by using the heat of the circulating water, and then heats the LNG by using the medium to realize the heating and gasification of the LNG. And the air supply system is connected to the engine to supply fuel to the engine. Wherein, the medium is glycol water solution with lower freezing point, so as to avoid freezing and ensure the gasification stability of the gas supply system.

Fig. 1 shows a schematic view of an air supply system connected to an engine, and referring to fig. 1, the air supply system includes a storage device, a gasification device 12, and a heat exchange device 11.

The storage device is used for storing the fuel in a liquid state. The liquid fuel may be liquefied natural gas LNG, LPG, hydrogen, or the like. In this example, LNG is used as an example for explanation.

The storage equipment and the ship body are detachably connected, so that the ship body can be filled by replacing the storage equipment.

The heat exchanging device 11 comprises a heat passage and a medium passage capable of exchanging heat.

The heat channel is arranged at the downstream of the engine to receive circulating water of the engine. Specifically, the inlet of the heat channel is connected to the output pipe 21 of the engine, and a delivery pump is provided therebetween to pump the circulating water into the heat channel.

The outlet of the heat channel is communicated with the outside so as to discharge the circulating water with the reduced temperature to the outside. In this embodiment, the outlet of the heat passage discharges the circulating water to the outboard side of the ship through a pipeline. Illustratively, into the sea or into the river.

Namely, the heat channel is used for circulating water to pass through and transferring heat to the medium channel when the circulating water passes through.

The medium channel is provided with a medium, namely the medium passes through the medium channel.

Specifically, the vehicle is an aqueous ethylene glycol solution. Wherein, in the ethylene glycol aqueous solution, the volume ratio of ethylene glycol to water is (4-6): (6:4).

Aqueous glycol solutions have a lower freezing point than water, i.e., at the freezing point of water, water is frozen, while aqueous glycol solutions are not frozen. Therefore, the ethylene glycol aqueous solution is used as a medium, so that the phenomenon that the freezing of the ethylene glycol aqueous solution affects the gasification stability and the gasification effect can be avoided.

The working principle of the heat exchange device 11 is as follows: the circulating water of the cooling circulation system passes through the heat channel, the medium passes through the medium channel, and the heat exchange is carried out between the circulating water and the medium, namely the circulating water transfers heat to the medium, so that the temperature of the medium is increased, and the temperature of the circulating water is reduced.

The gasification device 12 is located between the storage device and the engine for receiving and gasifying the fuel and sending it to the engine.

Specifically, the gasification apparatus 12 includes a heat source path and a heat sink path.

The heat source passage has an inlet and an outlet, and the inlet of the heat source passage is connected to the outlet of the medium passage to receive the medium whose temperature has been increased.

The outlet of the heat source passage is connected with the inlet of the medium channel, and the medium after temperature reduction is conveyed to the medium channel.

That is, the heat source passage and the medium passage form a circulation passage through which the medium flows, and the medium absorbs heat of the circulating water in the medium passage and releases the heat in the heat source passage.

The cold source passage is arranged at the downstream of the storage device to receive the fuel in a liquid state. And the cold source passage is arranged at the upstream of the engine and used for conveying the gasified fuel to the engine. Namely, the inlet of the cold source passage is connected with the storage device, and the outlet is connected with the engine.

The heat source passage and the cold source passage can exchange heat, namely, the medium with the increased temperature exchanges heat with the LNG to transfer heat to the LNG, so that the LNG is gasified.

The operating principle of the gasification plant 12 is as follows: the medium with the increased temperature passes through the heat source passage, the liquid fuel passes through the cold source passage, and the heat exchange is carried out between the heat source passage and the cold source passage, namely the medium transfers heat to the LNG, so that the LNG is increased in temperature and gasified.

A circulation pump 13 is provided between the inlet of the heat source passage and the outlet of the medium passage so that the medium can flow in the circulation passage formed by the heat source passage and the medium passage.

Further, the air supply system also includes an expansion tank 14. The expansion tank 14 is disposed between an outlet of the medium passage and an inlet of the heat source passage. The expansion tank 14 is filled with a medium, and the expansion tank 14 is communicated with the atmosphere.

The medium absorbs heat of the circulating water and transfers the heat to the LNG, which is a means for transporting heat, and may expand due to a temperature increase or contract due to a temperature decrease, resulting in an increase in pressure or an insufficient amount of the medium in the entire circulation path. The expansion tank 14 not only can stabilize the pressure, but also can automatically supplement the medium.

Fig. 2 shows a schematic view of another embodiment of the air supply system, which, referring to fig. 2, further comprises an expansion tank 14 arranged in parallel with the gasification plant 12. One end of the expansion tank 14 is disposed between the outlet of the medium passage and the inlet of the heat source passage, and the other end is disposed between the outlet of the heat source passage and the inlet of the medium passage.

Specifically, an inlet pipeline is provided at an inlet of the medium passage, an outlet pipeline is provided at an inlet of the heat source passage, a connection pipeline is provided on the expansion tank 14, and the inlet pipeline, the outlet pipeline and the connection pipeline are connected by a three-way member.

When the ship uses only LNG as fuel, the intermediate medium may be heated by electric energy and then the LNG may be gasified. When the ship uses LNG and diesel oil as fuel at the same time, the tail gas generated by the engine when the diesel oil is used as the fuel can be utilized firstly.

the utility model provides an air supply system includes storage facilities, gasification equipment and indirect heating equipment, and indirect heating equipment uses the circulating water of engine as the source, and heat heating medium through this circulating water is mediated, and the rethread medium makes the fuel gasification with heat transfer to being liquid fuel to provide fuel for the engine. The air supply system takes the ethylene glycol aqueous solution as a medium, has a low freezing point, is not easy to freeze, and can stably gasify the fuel.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An air supply system for fueling an engine, comprising:

a storage facility for storing fuel in a liquid state;

2. The air supply system according to claim 1, wherein an inlet of the heat channel is connected with the engine, and a delivery pump is arranged between the inlet and the engine to pump circulating water into the heat channel;

3. The air supply system according to claim 1, wherein the gasification apparatus includes a heat source passage provided downstream of the medium passage and a heat sink passage provided upstream of the engine to deliver the gasified fuel to the engine;

4. The gas supply system according to claim 3, wherein an outlet of the heat source passage is connected to an inlet of the medium passage;

and a circulating pump is arranged between the inlet of the heat source passage and the outlet of the medium channel.

5. The air supply system according to claim 3, further comprising an expansion tank disposed between an outlet of the medium passage and an inlet of the heat source passage.

6. The air supply system according to claim 3, further comprising an expansion tank provided in parallel with the gasification device, one end of the expansion tank being provided between an outlet of the medium passage and an inlet of the heat source passage, and the other end thereof being provided between the outlet of the heat source passage and the inlet of the medium passage.

7. The gas supply system according to claim 6, wherein an inlet pipe is provided at an inlet of the medium passage, an outlet pipe is provided at an inlet of the heat source passage, and a connection pipe is provided on the expansion tank, and the inlet pipe, the outlet pipe, and the connection pipe are connected by a three-way member.

8. A ship comprising a hull and an engine mounted on the hull and an air supply system as claimed in any one of claims 1 to 7, the air supply system receiving circulating water from the engine and being connected to the engine to provide gasified fuel to the engine.

9. The marine vessel of claim 8, wherein said number of engines is two, both said engines being connected to said heat tunnel to provide circulating water.